.dm_layout {
  width: 1000px;
  margin: auto;
  background: #ffffff;
}

.dm_layout_top {
   
}

.dm_page_content {
  width: 780px;
  float: left;
  margin-right: 5px;
}

.dm_layout_left {
  width: 150px;
  float: left;
  padding-top: 15px;
}

.dm_layout_right {
  width: 215px;
  float: left;
}

.dm_layout_bottom {
margin-top: 25px;
}